|Publication number||US4650417 A|
|Application number||US 06/322,568|
|Publication date||Mar 17, 1987|
|Filing date||Nov 18, 1981|
|Priority date||Jan 21, 1980|
|Publication number||06322568, 322568, US 4650417 A, US 4650417A, US-A-4650417, US4650417 A, US4650417A|
|Original Assignee||Robert Schwartz|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (11), Referenced by (6), Classifications (4), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a continuation-in-part of Ser. No. 114,096, filed Jan. 21, 1980, now abandoned.
This invention is directed to a denture-forming device useful for preparing dental arches or dental arch elements from individual artificial teeth. More particularly, this invention is concerned with a device that can be used to prepare dental arches or segments of dental arches that correspond to standard orthodontic arch forms.
Artificial maxillary or mandibular arches, or segments thereof, that conform with orthodontic or other standard arch forms can be prepared with the device of the present invention. The denture forming device is preferably composed of a solid, mold-like structure that has tooth-positioning means formed into the upper surface thereof. The tooth positioning means are adapted to receive at least the occlusal surface segments of at least two anatomically adjacent artificial teeth of either the maxillary or mandibular arch. The tooth positioning means serves to retain such artificial teeth in a spaced-apart relationship in conformance with an orthodontic or other standard arch form. Most preferably, the denture-forming device positions individual teeth such that the buccal and/or labial extent of the individual teeth corresponds substantially to the line of a standard arch form.
The invention will be more readily understood by reference to the accompanying drawings in which:
FIG. 2 is a top elevational view of a denture forming device of the present invention that is adapted to form a maxillary arch of artificial teeth;
FIG. 2 is a cross-sectional view of a segment of the denture forming device of FIG. 1 taken along line A--A; and
FIG. 3 is a view of a wax-up of a maxillary arch segment formed with the device of FIG. 1.
As is evident from FIG. 1, the denture forming device, in its simplest form, is a solid, mold-type structure 10 of holes or segments 1 that are adapted to retain and position individual artificial teeth substantially in conformance with an orthodontic arch form. The orthodontic arch form employed may be any of the standard arch forms such as the Grader; Bonwill-Hawley; Rock Mountain Data Systems; R. M. Ricketts, Ponts Index, etc. As shown in FIG. 2, holes or segments 1 are adapted to hold or position individual artificial teeth in a spaced-apart relationship relative to each other such that the buccal and/or labial surface thereof are held in conformance with a predetermined standard orthodontic arch form. Preferably the spacing between teeth is less than about one millimeter. The allowance of space in structure 10 between the segments allows for the vagaries in the mesial-distal width of the teeth provided by the teeth manufacturer.
For illustration, a standard orthodontic arch B is superimposed upon the upper surface of FIG. 1 to show the positioning of holes 1 of mold 10 relative to the desired arch form. While FIG. 1 shows a full maxillary arch, it should be recognized that similar devices having holes 1 to hold the less-than-full complement of teeth in the maxillary or mandibular arch are comtemplated by the present invention. Preferably, structure 10 retains the occlusal (lowermost) surfaces of the artificial teeth in substantially the same flat or spherical plane.
The denture forming device can be formed from a variety of materials and the precise materials of construction used are not critical. Preferably the device is formed from a rubbery material that has good dimensional stability, such as silicone rubber or plasticized poly(vinyl chloride). In general, a different denture forming device is required for each different tooth manufacturer's product since the size and shape of individual artificial teeth vary from manufacturer to manufacturer.
In use, the practitioner selects a denture forming device 10 constructed having holes 1 arranged to conform with the desired arch form, e.g., a number 5 Bonwill-Hawley arch form and will place either mandibular or maxillary teeth 3 into the various tooth holding compartments 1 of device 10. These tooth holding compartments 1 are adapted to retain each individual artificial tooth 3 in a spaced-apart relationship relative to each other and in conformance with the orthodontic arch form. As shown in FIG. 2, compartment 1 is designed to retain the occlusal surface of each individual tooth in the bottom portion of each compartment 1. The bottom of each compartment 1 may be relatively flat. Preferably each compartment 1 is sized such that the lower portion (nearest the occlusal surface) of each tooth is held securely in place. Preferably each compartment 1 encloses the lower portion of each tooth to a height C (see FIG. 2) such that the buccal and/or facial and lingual and/or palatal surface of each artificial tooth is not enclosed beyond a point immediately above the undercut point of each artifical tooth in situations where the manufacturer has provided the undercut. Thereafter the practitioner will typically place wax or other binding medium (thermoplastics) 2 over the non-enclosed portions of the individual teeth 3 to bind them together in a complete arch or arch segment (see FIG. 3). If wax is used, minor adjustments of individual teeth in the completed arch may be made readily. This product, after removal from device 10, is thereafter used in the manufacture of artificial dentures. Using the device of the present invention permits the practitioner to form maxilary or mandibular arches that conform substantially to standard arch forms, from individual artificial teeth. The arches are precise, readily formed and possess the esthetices normally associated with dentures formed from individual artificial teeth.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US531092 *||Apr 2, 1894||Dec 18, 1894||Process of forming dental plates|
|US1303223 *||Apr 24, 1917||May 6, 1919||Process oe making artificial dentures and occluding-eorm for the same|
|US1339821 *||Nov 13, 1916||May 11, 1920||Hall Rupert E||Artificial teeth|
|US1518075 *||Dec 20, 1919||Dec 2, 1924||Kesling Elmer G||Occluding form for positioning teeth in making artificial dentures|
|US1840703 *||May 16, 1929||Jan 12, 1932||Prophylactic Brush Co||Dental arch test card|
|US2229780 *||Jan 24, 1940||Jan 28, 1941||Vaillancourt Eugene J||Method and apparatus for mounting artificial teeth|
|US2542207 *||Sep 3, 1946||Feb 20, 1951||William Osborne James||Method of preparing trial dentures|
|US2659970 *||Jan 19, 1951||Nov 24, 1953||Ingersoll Jr Nelson||Artificial intraoral veneer and process of producing anatomically colored and contoured restorations utilizing same|
|US2859088 *||Nov 15, 1954||Nov 4, 1958||Austenal Inc||Process of making dental parts|
|US3846911 *||Jan 5, 1973||Nov 12, 1974||Wichner V||Preformed blanks for false teeth set-up|
|GB510152A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6033221 *||Oct 26, 1998||Mar 7, 2000||Sankin Kogyo Kabushiki Kaisha||Denture producing device|
|US6508651 *||Nov 13, 2000||Jan 21, 2003||Yamaguchi Shizai Kogyo Kabushiki Kaisha||Dentures and false teeth|
|US8986008 *||Aug 7, 2013||Mar 24, 2015||Kabushiki Kaisha Shofu||Method of arranging artificial molar teeth|
|US20050009736 *||Aug 11, 2004||Jan 13, 2005||Winslow Robert M.||Methods and compositions for optimization of oxygen transport by cell-free systems|
|US20050178441 *||Apr 12, 2005||Aug 18, 2005||Hitachi, Ltd.||Fuel pump for inter-cylinder direct fuel injection apparatus|
|US20130316304 *||Aug 7, 2013||Nov 28, 2013||Kabushiki Kaisha Shofu||Artificial molar teeth|
|May 2, 1990||FPAY||Fee payment|
Year of fee payment: 4
|Sep 15, 1994||FPAY||Fee payment|
Year of fee payment: 8
|Oct 6, 1998||REMI||Maintenance fee reminder mailed|
|Mar 16, 1999||FPAY||Fee payment|
Year of fee payment: 12
|Mar 16, 1999||SULP||Surcharge for late payment|